Comparative Pharmacology
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE 0 4 IN DEXTROSE 5 IN PLASTIC CONTAINER versus MARCAINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LIDOCAINE HYDROCHLORIDE 0 4 IN DEXTROSE 5 IN PLASTIC CONTAINER versus MARCAINE.
LIDOCAINE HYDROCHLORIDE 0.4% IN DEXTROSE 5% IN PLASTIC CONTAINER vs MARCAINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Lidocaine is a sodium channel blocker that inhibits depolarization of cardiac myocytes and nerve axons by binding to voltage-gated sodium channels and stabilizing the neuronal membrane, thereby preventing the propagation of action potentials.
Bupivacaine blocks sodium ion channels in nerve cell membranes, inhibiting the generation and propagation of action potentials, resulting in local anesthesia.
Intravenous infusion: 1-4 mg/min (20-50 mcg/kg/min) for cardiac arrhythmias. Bolus: 1-1.5 mg/kg IV, then infusion.
Local infiltration: 0.25-0.5% solution, up to 30 mL; peripheral nerve block: 0.25-0.5% solution, 30-40 mL; epidural: 0.5-0.75% solution, 15-30 mL. Maximum dose: 2 mg/kg (with epinephrine), 1.5 mg/kg (without epinephrine).
None Documented
None Documented
Terminal elimination half-life approximately 1.5-2 hours after bolus, prolonged to 2-4 hours in heart failure or hepatic impairment; continuous infusion may show context-sensitive half-life.
Terminal elimination half-life: 2.5-4 hours in adults (longer in neonates and hepatic impairment; up to 8-12 hours). Clinically, accumulation occurs with continuous infusion or repeated doses.
Renal excretion of unchanged drug and metabolites; <10% unchanged in urine, >90% as metabolites (primarily monoethylglycinexylidide and glycinexylidide). Biliary/fecal elimination minimal (<1%).
Renal excretion of metabolites (approximately 90-95% as para-aminobenzoic acid and other metabolites); less than 5% unchanged in urine. Biliary/fecal excretion is minimal.
Category A/B
Category C
Local Anesthetic / Antiarrhythmic (Class Ib)
Local Anesthetic